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View Full Version : Is dealer recommending right oil?


snobinge
03-26-2012, 09:03 PM
I live in Wisconsin and have asked two MC dealers for recommendations on what oil to use in my 1998 Prostar 205. I have the standard engine. Both dealers have recommended Mobil Delvac. It is 15W/40 and is marketed towards deisel engines. Link below.

Is this right???

http://www.mobil.us/USA-English-LCW/heavydutyengineoils.aspx?WT.srch=1

tex
03-26-2012, 09:12 PM
Yep-That's what I run in my 197 with the preditor!

-V-
03-26-2012, 09:23 PM
is this thread going to turn into "this oil is better"?

holdenh2o
03-26-2012, 09:27 PM
15w40 is right. That weight is for diesel and marine applications. Given that, choose a brand name conventional oil or synthetic in that weight. Most are really good oils. Some are great oils. Your move.

carlsonwa
03-26-2012, 09:46 PM
I use 15-40 amsoil synthetic on my 99' 190


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psychobilly
03-26-2012, 09:58 PM
Not yet another orl thread!!!!! Lol there must be a thousand threads in here on this lol

east tx skier
03-26-2012, 10:08 PM
Since you have the Vortec heads and a roller cam, any oil that meets MC specs should do fine. A good diesel oil like that is probably fine. Rotella 15W40 is another good choice.

CantRepeat
03-26-2012, 10:44 PM
Since you have the Vortec heads and a roller cam, any oil that meets MC specs should do fine. A good diesel oil like that is probably fine. Rotella 15W40 is another good choice.

Get it from Napa.

FrankSchwab
03-27-2012, 02:22 AM
Good oil, and a good viscosity for marine engines. By at least 2001 (possibly earlier), Indmar was recommending 15w-40 for your engine.

I'd say your dealer is steering you in the right direction.

/frank

snobinge
03-27-2012, 10:12 AM
I was not looking for a which oil is better opinion...although I am grateful for replies like the one's from East TX Skier. I welcome opinions on what oil has worked well for you guys. My real question was the concern that the oil was marketed for diesel engines and is a different weight than what my manual says.

Just found the large Jugs of Mobil Delvac with $5 rebate at Farm and Fleet for those of you in WI. I will probably go that route unless anyone gives me a reason not to.

Jeff d
03-27-2012, 10:54 AM
My real question was the concern that the oil was marketed for diesel engines and is a different weight than what my manual says.

There aren't too many 15w40 oils where the marketing doesn't imply that they're "diesel oils". Heavy duty diesel is just the most common application for that weight. Rotella and Delvac meet the necessary specs and are commonly used in boats and motorcycles. Don't let the picture of the big rig on the bottle bother you if it lists that it meets the proper standards in the fine print.

GoneBoatN
03-27-2012, 11:36 PM
Chevron Delo 400 LE 15w40 in the one my local shop likes. I've been using it myself. I find it in Walmart for a good price.

Thrall
03-28-2012, 07:58 PM
Bought about 30 gal of Valvoline 15-40 premium blue last year for $9.99/gal. I put that sh!t in everything!
Really, you'll be fine with any automotive grade oil like 10W30 10W40, but the 15W40's are a longer lasting oil, built to withstand higher temps/shear. More ideal for boat engines that are under a greater constant load than automobiles.

That said, I used 10W40 for 2-3 years in my PS 190, LT-1, no problem.